/Engine/Source/Runtime/Engine/Public/SceneInterface.h
Retrieves the lights interacting with the passed in primitive and adds them to the out array.
void GetRelevantLights ( [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * Primitive, [TArray](API\Runtime\Core\Containers\TArray)< const [ULightComponent](API\Runtime\Engine\Components\ULightComponent) * > * RelevantLights ) const